This is a nice compact way to hold Nintendo 64 cartridges.
I've printed the 1, 2, 4, 6, 8, and 10 ācart trays with holeā variant. The following is a photo including some of the earlier prototypes that I started with.


This is the first model I've uploaded so if you are going to print this I would suggest printing a 1 Cart version to confirm the fit.
The author marked this model as their own original creation.